scholarly journals Design of Intelligent Environmental Management and Decision-Making Platform for Small- and Medium-Sized Hydropower-Intensive Watersheds

2019 ◽  
Vol 136 ◽  
pp. 01004
Author(s):  
Chenyang Xue ◽  
Chaofeng Shao
Keyword(s):  
Decision Making ◽  
Watershed Management ◽  
Water Environment ◽  
Ecological Monitoring ◽  
River Basin Management ◽  
Development Trend ◽  
Pollution Source ◽  
Source Analysis ◽  
Ecological Compensation ◽  
Intelligent Management

Watershed management includes the management of water resources, water environment, and water ecology. The use of intelligent management methods has become a new development trend. Facing the current situation of river basin management in China and the latest management requirements, the positioning of intellectualization in the top-level design of watershed management is clarified. Based on the vulnerability and complexity of ecosystem in small- and medium-sized hydropower-intensive watersheds, the overall framework of intelligent management and decision-making platform is designed, which covers water resource allocation, pollution source analysis, risk early warning, ecological monitoring, industrial access, ecological compensation, public participation, and other functional modules and forms a government–enterprise–society multi-management system.

scholarly journals Overview and application of the National Aquatic Ecological Monitoring Program (NAEMP) in Korea

2011 ◽  
Vol 47 ◽  
pp. S3-S14 ◽  
Author(s):  
Sang-Woo Lee ◽  
Soon-Jin Hwang ◽  
Jae-Kwan Lee ◽  
Dong-Il Jung ◽  
Yeon-Jae Park ◽  
...  
Keyword(s):  
Watershed Management ◽  
Ecosystem Health ◽  
Water Environment ◽  
Monitoring Program ◽  
Oxygen Demand ◽  
Ecological Monitoring ◽  
Ecological Condition ◽  
Chemical Parameters ◽  
Rivers And Streams ◽  
Korean Ministry

This paper provides an overview of the development and application of the National Aquatic Ecological Monitoring Program (NAEMP) in Korea, which uses biological and habitat–riparian criteria for river/stream and watershed management. Development of NAEMP began in 2003, with recognition by the Korean Ministry of Environment (MOE) of the limitations of applying chemical parameters (e.g., biochemical oxygen demand (BOD)) as the principal targets of water environment management. Ecosystem health criteria under NAEMP were developed from 2003 to 2006. Candidate sites for monitoring were also screened and established across the country. NAEMP was implemented in 2007, and since then a standard protocol of nationwide monitoring based on multi-criteria has been implemented to assess the ecological condition of rivers and streams. The monitoring results indicate that many Korean rivers and streams are severely degraded, with biological conditions that are much worse than their water chemistry suggests. In 2009, 24% of rivers and streams were in classes C (Fair) and D (Poor) for BOD, but more than 71, 53, and 27% were categorized as Fair to Poor according to fish, diatom, and benthic macroinvertebrate assemblages, respectively. NAEMP is promising in that the results have already had great impacts on policy making and scientific research relevant to lotic water environment and watershed management in Korea. In the future, NAEMP results will be used to develop more aggressive regulations for the preservation and restoration of rivers/streams, riparian buffer areas and watersheds. Another future aim of the NAEMP is to develop aquatic ecological modeling based on the monitoring results.

scholarly journals Research Advances in the Analysis of Nitrate Pollution Sources in a Freshwater Environment Using δ15N-NO3− and δ18O-NO3−

2021 ◽  
Vol 18 (22) ◽  
pp. 11805
Author(s):  
Chao Niu ◽  
Tianlun Zhai ◽  
Qianqian Zhang ◽  
Huiwei Wang ◽  
Lele Xiao
Keyword(s):  
Source Apportionment ◽  
Water Environment ◽  
Pollution Source ◽  
Nitrate Pollution ◽  
Pollution Sources ◽  
Source Analysis ◽  
Freshwater Environment ◽  
Initial Water ◽  
Groundwater Environment ◽  
Isotope Technique

Nitrate is usually the main pollution factor in the river water and groundwater environment because it has the characteristics of stable properties, high solubility and easy migration. In order to ensure the safety of water supply and effectively control nitrate pollution, it is very important to accurately identify the pollution sources of nitrate in freshwater environment. At present, as the most accurate source analysis method, isotope technology is widely used to identify the pollution sources of nitrate in water environment. However, the complexity of nitrate pollution sources and nitrogen migration and transformation in the water environment, coupled with the isotopic fractionation, has changed the nitrogen and oxygen isotopic values of nitrate in the initial water body, resulting in certain limitations in the application of this technology. This review systematically summarized the typical δ15N and δ18O-NO3− ranges of NO3− sources, described the progress in the application of isotope technique to identify nitrate pollution sources in water environment, analyzed the application of isotope technique in identifying the migration and transformation of nitrogen in water environment, and introduced the method of quantitative source apportionment. Lastly, we discussed the deficiency of isotope technique in nitrate pollution source identification and described the future development direction of the pollution source apportionment of nitrate in water environment.

scholarly journals Impact of the municipal merger on watershed management: a study of Lake Kasumigaura, Japan

2021 ◽  
Author(s):  
Takeshi Mizunoya ◽  
Noriko Nozaki ◽  
Rajeev Kumar Singh
Keyword(s):  
Watershed Management ◽  
Large Scale ◽  
Environmental Changes ◽  
Water Environment ◽  
Reduction Rate ◽  
Oxygen Demand ◽  
Policy Implications ◽  
Pollution Reduction ◽  
Lake Kasumigaura ◽  
The Impact

AbstractIn the early 2000s, Japan instituted the Great Heisei Consolidation, a national strategy to promote large-scale municipal mergers. This study analyzes the impact that this strategy could have on watershed management. We select the Lake Kasumigaura Basin, the second largest lake in Japan, for the case study and construct a dynamic expanded input–output model to simulate the ecological system around the Lake, the socio-environmental changes over the period, and their mutual dependency for the period 2012–2020. In the model, we regulate and control the following water pollutants: total nitrogen, total phosphorus, and chemical oxygen demand. The results show that a trade-off between economic activity and the environment can be avoided within a specific range of pollution reduction, given that the prefectural government implements optimal water environment policies, assuming that other factors constraining economic growth exist. Additionally, municipal mergers are found to significantly reduce the budget required to improve the water environment, but merger budget efficiency varies nonlinearly with the reduction rate. Furthermore, despite the increase in financial efficiency from the merger, the efficiency of installing domestic wastewater treatment systems decreases drastically beyond a certain pollution reduction level and eventually reaches a limit. Further reductions require direct regulatory instruments in addition to economic policies, along with limiting the output of each industry. Most studies on municipal mergers apply a political, administrative, or financial perspective; few evaluate the quantitative impact of municipal mergers on the environment and environmental policy implications. This study addresses these gaps.

scholarly journals Simulation modeling for urban ecology maintenance of environmental comfort level – evidence from the city of Rostov-on-Don

2018 ◽  
Vol 251 ◽  
pp. 06007 ◽  
Author(s):  
Svetlana Sheina ◽  
Karina Yudina
Keyword(s):  
Decision Making ◽  
Urban Ecology ◽  
Simulation Modeling ◽  
Ecological Monitoring ◽  
Comfort Level ◽  
Managerial Decision ◽  
Urban Territories ◽  
Urban Planning And Development ◽  
Ecological Reconstruction ◽  
The City

The article touches upon the issue of simulation modeling used as an instrument of managerial decision making in the field of urban planning and development. Modeling is carried out by means of modern IT in software package ESRI ArcGIS 10.1 and for the purposes of information-analytical procurement of complex improvement process and ecological reconstruction of urban territories, urban ecology decision making, and development of ecological monitoring system in urban territories. Simulation model constructed on the basis of the suggested method allows to monitor specific changes in the surveyed environment in the context of gradual implementation of complex assessment and greening activities.

Quantifying the impact of human activities on water quality based on spatialization of social data: a case study of the Pingzhai Reservoir Basin

2020 ◽  
Vol 20 (2) ◽  
pp. 688-699 ◽  
Author(s):  
Yongrong Zhang ◽  
Zhongfa Zhou ◽  
Haotian Zhang ◽  
Yusheng Dan
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Human Activities ◽  
Water Environment ◽  
Oxygen Demand ◽  
Pollution Source ◽  
Pollution Load ◽  
Social Data ◽  
Reservoir Basin ◽  
The Impact

Abstract In water pollution source research, it is difficult to quantify the impact of human activities on water quality. Based on pollution load theory and the concept of spatialization of social data, this study integrates land-use type, slope gradient, and spatial position, and uses the contribution of human activities to quantify the impact of farmland fertilizers, livestock and poultry wastes, and human domestic pollution on water quality in the study area. The results show that livestock manure is the largest source of total phosphorus (TP) and total nitrogen (TN) discharges in the research area, and domestic pollution is the largest source of chemical oxygen demand (COD) discharges. The total equal standard pollution load (as well as the load of each pollution source and its pollutant amount) is the highest in the Nayong River Basin and the lowest in the Baishui River Basin. The contributions of human activities to TP and TN have similar spatial distributions. The impact of human activities on COD discharge is minimal. The quantitative results of this model are basically consistent with the actual conditions in the Pingzhai Reservoir Basin, which suggests that the model reasonably reflects the impact of human activities on the water environment of the basin.

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